SEOUL, South Korea was told the historic U.S.-North Korea summit will be held in Singapore at least a week earlier, an official from Seoul's presidential office Cheong Wa Dae said Friday, hours after U.S. President Donald Trump revealed the location of his anticipated meeting with North Korean leader Kim Jong-un.

The official, who spoke on condition of anonymity, said Moon's top security adviser Chung Eui-yong was the first to hear about the date and location of the U.S.-North Korea summit.

"Chung was told the summit will be held in Singapore around June 12 and 13 when he went to the United States to meet his U.S. counterpart John Bolton a week earlier," the Cheong Wa Dae official told reporters.

Trump earlier tweeted his meeting with Kim will be held June 12.

The Cheong Wa Dae official noted Seoul had suggested the meeting be held at the border village of Panmunjom, the venue of another historic summit between South Korean President Moon Jae-in and the North Korean leader, held April 27, and that Trump appeared to seriously consider the suggestion when speaking with Moon over the phone the day after the inter-Korean summit.

North Korea, on the other hand, proposed holding the unprecedented U.S.-North Korea summit in its own capital.

"There were efforts by North Korea to actively host the summit in Pyongyang in the process of negotiating with the U.S.," the official said of one reason the Seoul government believed the location of the upcoming summit could still be changed even after being told it will be held in Singapore.

The official said there was also another candidate city for the Trump-Kim meeting -- South Korea's Songdo Island, which is home to Incheon International Airport.

"The place appeared to have been mentioned between President Moon and President Trump in their earlier conversations when they spoke over the phone on April 28, but it was only briefly mentioned so it was not considered a serious candidate," the official said.

Source: Yonhap News Agency